Driving substrate and display panel

ABSTRACT

A driving substrate and a display panel are provided. The driving substrate includes a plurality of driving units. Each of driving unit includes a first metal layer. The first metal layer includes a shielding common electrode and a storage capacitance common electrode. A light-shielding portion of the shielding common electrode extends toward the storage capacitance common electrode. A pixel accommodating region is enclosed by the shielding common electrode and the storage capacitance common electrode. There is a gap between the light-shielding portion of the shielding common electrode and the storage capacitance common electrode. Thereby, signals can be transmitted to the shielding common electrode and the storage capacitance common electrode separately, a same signal or different signals can be transmitted to the shielding common electrode and the storage capacitance common electrode, to achieve independent control of the signals on the shielding common electrode and the storage capacitance common electrode.

FIELD OF INVENTION

The present application relates to a field of display technology, and inparticular, to a driving substrate and a display panel.

BACKGROUND OF INVENTION

In a process of manufacturing LCD panels, a thin film transistor (TFT)substrate is manufactured by using a 4-channel mask process in order toreduce costs. In the 4-channel mask process, a semiconductor layer isprovided under a second metal layer of the TFT substrate, and ametal-insulator-semiconductor (MIS) capacitance is formed between a dataline on the second metal layer and a common electrode on a first metallayer, as shown in FIG. 1 . In conventional technology, a shieldingcommon electrode and a storage capacitance common electrode included onthe first metal layer are connected as one, which makes impossible tocontrol the signals on the shielding common electrode and the storagecapacitance common electrode independently. As shown in FIG. 2 and FIG.3 , the carriers in the semiconductor layer are redistributed when thedata lines on the second metal layer switched between a positivepolarity and a negative polarity, which making the charge positions aredifferent. Thereby effective spacings between the data lines on thesecond metal layer and the common electrode on the first metal layer aredifferent, resulting in an asymmetric MIS capacitance occurrence whenthe data lines on the second metal layer are switched between thepositive polarity and the negative polarity, leading to a horizontalline crosstalk phenomenon in the LCD panel.

SUMMARY OF INVENTION

Based on the above-mentioned problems, it is necessary to provide adriving substrate and a display panel for the problem that the signalsof the shielding common electrode and the storage capacitance commonelectrode cannot be controlled independently in a conventional liquidcrystal panel.

In order to achieve the above purpose, on a one hand, the presentapplication embodiment provides a driving substrate including aplurality of driving units, wherein each of the driving unit includes afirst metal layer, and wherein the first metal layer includes ashielding common electrode and a storage capacitance common electrode,wherein a light-shielding portion of the shielding common electrodeextends toward the storage capacitance common electrode, wherein a pixelaccommodating region is enclosed by the shielding common electrode andthe storage capacitance common electrode, and wherein there is a gapbetween the light-shielding portion of the shielding common electrodeand the storage capacitance common electrode.

In one embodiment of the present application, the storage capacitancecommon electrode transmits a first voltage signal, and wherein a voltageof the first voltage signal is greater than a voltage of a data voltagesignal of the driving substrate.

In one embodiment of the present application, the shielding commonelectrode transmits a second voltage signal, wherein a voltage of thesecond voltage signal is less than a voltage of a threshold voltagesignal, and wherein the voltage of the threshold voltage signal is aminimum value that causes a light leakage of the driving substrate.

In one embodiment of the present application, the voltage of the secondvoltage signal is less than the voltage of the first voltage signal.

In one embodiment of the present application, the voltage of the firstvoltage signal is greater than or equal to 20V, and wherein the voltageof the second voltage signal is greater than or equal to 6V and lessthan 14V.

In one embodiment of the present application, the gap between thelight-shielding portion of the shielding common electrode and thestorage capacitance common electrode is greater than or equal to 5micrometers and less than or equal to 15 micrometers.

In one embodiment of the present application, the driving substratefurther includes a first signal source that is connected to the storagecapacitance common electrode and transmits the first voltage signal tothe storage capacitance common electrode.

In one embodiment of the present application, the driving substratefurther includes a second signal source that is connected to theshielding common electrode, and transmits a second voltage signal to theshielding common electrode, and wherein a voltage of the second voltagesignal is less than the voltage of the first voltage signal.

In one embodiment of the present application, the driving unit furtherincludes a second metal layer disposed in a different layer from thefirst metal layer, wherein the second metal layer includes a data line,a drain electrode layer, and a source electrode layer, and wherein thefirst metal layer further includes a gate scanning line, and wherein thesource electrode layer is connected to the data line, and the sourceelectrode layer is disposed corresponding to the gate scanning line,wherein the drain electrode layer is connected to the source electrodelayer, and the drain electrode layer is disposed corresponding to thestorage capacitance common electrode.

On the other hand, the present application embodiment provides a displaypanel including a control main board, a display layer, and the drivingsubstrate as described above, wherein the control main board isconnected to the driving substrate, and wherein the driving substrate isconfigured to drive the liquid crystal molecules in the liquid crystallayer to deflect.

One of the technical embodiments described above has the followingadvantages and beneficial effects.

The driving substrate provided in each embodiment of the presentapplication includes a plurality of driving units. Each of the drivingunit includes a first metal layer. A shielding common electrode and astorage capacitance common electrode are included in the first metallayer. The shielding common electrode includes a light-shieldingportion. The light-shielding portion of the shielding common electrodeextends toward the storage capacitance common electrode. A pixelaccommodating region is enclosed by the shielding common electrode andthe storage capacitance common electrode. There is a gap between thelight-shielding portion of the shielding common electrode and thestorage capacitance common electrode, so that the shielding commonelectrode and the storage capacitance common electrode are not connectedto each other. Thereby, signals can be transmitted to the shieldingcommon electrode and the storage capacitance common electrodeseparately, a same signal or different signals can be transmitted to theshielding common electrode and the storage capacitance common electrode,to achieve independent control of the signals on the shielding commonelectrode and the storage capacitance common electrode.

DESCRIPTION OF FIGURES

FIG. 1 shows a schematic diagram of a structure of a MIS capacitor inthe prior art.

FIG. 2 shows a carrier distribution diagram of the MIS capacitor in theprior art under a positive polarity.

FIG. 3 shows a carrier distribution diagram of the MIS capacitor in theprior art under a negative polarity.

FIG. 4 is a schematic diagram of a structure of a first metal layer ofthe driving substrate provided by one embodiment of the presentapplication.

FIG. 5 is a schematic diagram of another structure of the first metallayer of the driving substrate provided by one embodiment of the presentapplication.

FIG. 6 is a schematic diagram of a structure of a second metal layer ofthe driving substrate provided by one embodiment of the presentapplication.

FIG. 7 is a schematic diagram of a structure of the driving substrateprovided by one embodiment of the present application.

DETAILED DESCRIPTION OF EMBODIMENTS

For a purpose of understanding the present application, the presentapplication is fully described below with reference to the relevantaccompanying figures. The preferred embodiments of the presentapplication are provided in the accompanying figures. However, thepresent application can be implemented in many different forms and isnot limited to the embodiments described herein. Rather, theseembodiments are provided for a purpose of making the disclosure of thepresent application more thorough and comprehensive.

It should be noted that when an element is considered to be “attached”to another element, it may be directly attached to and integrated withthe other element, or there may be a centered element as well. The terms“mount”, “end”, “other end” and similar expressions used herein are forillustrative purposes only.

Unless otherwise defined, all technical and scientific terms used hereinhave the same meaning as commonly understood by those skilled in the artto which the present application belongs. The terms used herein in thespecification of the present application are for a purpose of describingspecific embodiments only and are not intended to limit the presentapplication. The term “and/or” as used herein includes any and allcombinations of one or more of the relevant listed items.

A general liquid crystal display panel includes a control main board, areflective layer, a backlight source, a lower polarizer, a drivingsubstrate, a liquid crystal layer, a color filter, an upper polarizer,and other structures. The control main board is configured to controlthe entire LCD panel, for example, the control main board is connectedto the driving substrate to provide various types of signals for thedriving substrate to control the driving substrate. The reflective layeris configured to reflect a light emitted from the backlight source toimprove an emissivity of the LCD panel. In one example, the reflectivelayer may be made of any one of white oil, white glue, copper, aluminum,and silver. The backlight source provides light to the liquid crystaldisplay panel. In one example, the backlight source may be a coldcathode fluorescent lamp or a light emitting diode. The lower polarizerand the upper polarizer allow a natural light from the backlight sourceto become polarized. The liquid crystal layers change an orientation ofthe liquid crystals in response to an electric field, thereby changingthe passage of light. Specifically, the liquid crystal layers are drivenby a driving substrate. Color filters are configured to select a smallrange of light waves that pass through, including blue filters, redfilters, green filters, etc.

In conventional technology, a shielding common electrode and a storagecapacitance common electrode included on the first metal layer wereconnected together, which causes controlling the signals on theshielding common electrode and the storage capacitance common electrodeis difficult. To solve the above-mentioned problem, a driving substrateis provided in the present application as shown in FIGS. 4 to 6 . Thedriving substrate consists of a plurality of driving units 1, and thedriving units 1 are arranged in vertical and horizontal columns, whereinthe driving units 1 in a same horizontal column are connected to eachother. Each driving unit 1 supplies power to a pixel anode of acorresponding LCD panel to drive a corresponding pixel to emit light.The number of driving units 1 is confirmed according to a resolution ofthe LCD panel and an area of the LCD panel, which is not specificallylimited here.

As shown in FIGS. 4 and 5 , the driving unit 1 includes a first metallayer 100. It should be noted that a first metal layer 100 and a secondmetal layer 200 are divided according to a sequence of the manufacturingprocess. The first metal layer 100 precedes the second metal layer 200in the manufacturing process. The first metal layer 100 is made of anelectrically conductive material, for example, copper, molybdenum oraluminum. The first metal layer 100 can be made by any of the followingmethods: chemical vapor deposition (CVD), physical vapor deposition(PVD), atomic layer deposition (ALD), low pressure chemical vapordeposition (LVCVD), low pressure chemical vapor deposition (LPCVD),laser ablation deposition (LAD), and selective epitaxial growth (SEG).

As shown in FIG. 4 , the first metal layer 100 includes a shieldingcommon electrode 11 and a storage capacitance common electrode 13. Itshould be noted that the shielding common electrode 11 is configured toshield the liquid crystal in the pixel from display problems caused byinterference from other external electric fields. The storagecapacitance common electrode 13 is configured to store the electriccharge. As shown in FIG. 5 , the first metal layer 100 also includes agate scanning line 17, the gate scanning line is connected to a drivingcircuit of the driving unit 1 to transmit a scanning signal to thedriving circuit. The first metal layer 100 includes the shielding commonelectrode 11 and the storage capacitance common electrode 13, whichmeans that after manufacturing the first metal layer 100, the firstmetal layer 100 is graphically processed to obtain the shielding commonelectrode 11 and the storage capacitance common electrode 13.

The shielding common electrode 11 includes a main stem portion 111 and alight-shielding portion 113. The main stem portion 111 is connected to asignal source and transmits a voltage signal output from the signalsource. The light-shielding portion 113 is provided on both sides of thepixel to prevent the pixel from leaking light to both sides.Specifically, the light-shielding portion 113 of the shielding commonelectrode 11 extends toward the storage capacitance common electrode 13.In one embodiment, a number of light-shielding portions 113 is two, andthe light-shielding portions 113 are in a shape of an elongated strip.One terminal of the light-shielding portion 113 is connected to the mainstem portion 111 and the other terminal is set toward the storagecapacitance common electrode 13, i.e., the light-shielding portion 113is placed horizontally between the main stem portion 111 and the storagecapacitance common electrode 13, and the two light-shielding portions113 are set at a certain distance apart, wherein the distance is setaccording to a size of the pixels. Since the light-shielding portion 113extends toward the storage capacitance common electrode 13, theshielding common electrode 11 and the storage capacitance commonelectrode 13 enclose a pixel accommodating region. The pixelaccommodating region is configured to place pixels, i.e., the shieldingcommon electrode 11 and the storage capacitance common electrode 13 arepositioned around the pixels. In one embodiment, the main stem portion111, the light-shielding portion 113 of the shielding common electrode11, and the storage capacitance common electrode 13 are positionedaround the pixels.

For spacing apart the shielding common electrode 11 and the storagecapacitance common electrode 13, there is a gap 15 between thelight-shielding portion 113 of the shielding common electrode 11 and thestorage capacitance common electrode 13. It should be noted that the gap15 cannot be too small to avoid the light-shielding portion 113 stickingto the storage capacitance common electrode 13 due to the manufacturingprocess. The gap 15 also cannot be too large to avoid an occurrence oflight leakage due to the gap 15 being too large. In one embodiment, thegap 15 between the light-shielding portion 113 of the shielding commonelectrode 11 and the storage capacitance common electrode 13 is greaterthan or equal to 5 micrometers and less than or equal to 15 micrometers.For example, the gap 15 between the light-shielding portion 113 of theshielding common electrode 11 and the storage capacitance commonelectrode 13 is 6 micrometers, the gap 15 between the light-shieldingportion 113 of the shielding common electrode 11 and the storagecapacitance common electrode 13 is 7 micrometers, and the gap 15 betweenthe light-shielding portion 113 of the shielding common electrode 11 andthe storage capacitance common electrode 13 is 8 micrometers. It shouldbe noted that a specific value of the gap 15 serves as an example andthere is no specific limitation on it, as long as the above-mentionedgap 15 condition is satisfied.

The driving substrate provided in each embodiment of the presentapplication includes a plurality of driving units. The driving unitsinclude a first metal layer. A shielding common electrode and a storagecapacitance common electrode are included in the first metal layer. Theshielding common electrode includes a light-shielding portion, whereinthe light-shielding portion of the shielding common electrode extendstoward the storage capacitance common electrode. A pixel accommodatingregion is enclosed by the shielding common electrode and the storagecapacitance common electrode. There is a gap between the light-shieldingportion of the shielding common electrode and the storage capacitancecommon electrode, so that the shielding common electrode and the storagecapacitance common electrode are not connected to each other. Thereby,signals can be transmitted to the shielding common electrode and thestorage capacitance common electrode separately, a same signal ordifferent signals can be transmitted to the shielding common electrodeand the storage capacitance common electrode, to achieve independentcontrol of the signals on the shielding common electrode and the storagecapacitance common electrode.

In addition, the driving substrate is a critical component to ensure anormal display of the LCD panel. In order to reduce a manufacturing costof LCD panels in conventional technology, a 4mask process is used tomanufacture the driving substrate. The second metal layer 200 of thedriving substrate in the 4mask process is manufactured on top of thesemiconductor layer 400, so that the data lines on the second metallayer 200 and the common electrode on the first metal layer 100 of thedriving substrate form a capacitor, which is sandwiched between thesemiconductor layer. As shown in FIGS. 2 and 3 , the carriers (as e inFIG. 2 or 3 ) in the semiconductor layer 400 are redistributed when thedata lines on the second metal layer 200 switched between a positivepolarity and a negative polarity, so that the charge positions aredifferent, thereby effective spacings between the data lines on thesecond metal layer 200 and the common electrode on the first metal layer100 are different, resulting in asymmetric MIS capacitance when the datalines on the second metal layer 200 are switched between the positivepolarity and the negative polarity, leading to a horizontal linecrosstalk phenomenon in the LCD panel.

To solve the problem of horizontal line crosstalk phenomenon in the LCDpanel, the horizontal line crosstalk phenomenon in the LCD panel iseliminated by separately inputting a first voltage signal to the storagecapacitance common electrode 13 on a basis that the shielding commonelectrode 11 and the storage capacitance common electrode 13 areseparated. That is, the first voltage signal is transmitted to thestorage capacitance common electrode 13. It should be noted that thefirst voltage signal needs to eliminate the capacitance asymmetryproblem caused by the change between the positive polarity and thenegative polarity of the data line 21 of the driving substrate. For thispurpose, a voltage of the first voltage signal is greater than a voltageof the data voltage signal of the driving substrate, wherein the datavoltage signal is a signal transmitted on the data line 21. It should benoted that the first voltage signal is greater than a maximum value ofthe positive polarity of the data voltage signal to ensure that even ifthe positive polarity and the negative polarity of the data voltagesignal changes, the first voltage signal is always greater than the datavoltage signal, and an electric field direction of the capacitor formedby the data line 21 on the second metal layer 200 and the commonelectrode on the first metal layer 100 of the driving substrate isdetermined by the first voltage signal. Since the first voltage signalremains unchanged, so that the electric field direction of the capacitorremains unchanged. In one embodiment, the voltage of the first voltagesignal is greater than or equal to 20V. For example, the voltage of thefirst voltage signal is 22 V, the voltage of the first voltage signal is24 V, and the voltage of the first voltage signal is 26 V. It should benoted that a specific value of the first voltage signal is for examplepurposes, and there is no specific limitation on it, as long as thefirst voltage signal condition described above is satisfied.

In one embodiment, a driving substrate is provided as shown in FIGS. 4to 6 . The driving substrate may be divided into a plurality of drivingunits 1. The driving substrate includes a plurality of driving units 1.The driving units 1 are arranged in vertical and horizontal columns. Inone embodiment, the driving units 1 in a same horizontal column areconnected to each other. In another embodiment, the driving units 1 in asame vertical column are connected to each other.

As shown in FIGS. 4 and 5 , the driving unit 1 includes a first metallayer 100. It should be noted that the first metal layer 100 and thesecond metal layer 200 are divided according to a sequence ofpreparation processes. The first metal layer 100 precedes the secondmetal layer 200 in the manufacturing process. The first metal layer 100is made of conductive material, for example, conductive material may becopper, molybdenum, aluminum, silver, gold, or an alloy of any of theabove materials, or an alloy of any combination of materials, etc.

The first metal layer 100 includes a shielding common electrode 11 and astorage capacitance common electrode 13. It should be noted that theshielding common electrode 11 is configured to shield the liquid crystalin the pixel from display problems caused by interference from otherexternal electric fields. The storage capacitance common electrode 13 isconfigured to store electrical charge. The first metal layer 100 alsoincludes a gate scanning line 17, wherein the gate scanning line 17 isconnected to a driving circuit of the driving unit 1 to transmit a scansignal to the driving circuit.

The shielding common electrode 11 includes a main stem portion 111 and alight-shielding portion 113. The main stem portion 111 is connected to asignal source to transmit a voltage signal output from the signalsource. In one embodiment, a shape of the main stem portion 111 is anelongated strip, and the main stem portions 111 of the shielding commonelectrode 11 of each driving unit 1 are connected to each other. Thelight-shielding portion 113 is provided on both sides of the pixel toprevent the pixel from leaking light to both sides. Specifically, thelight-shielding portion 113 of the shielding common electrode 11 extendstoward the storage capacitance common electrode 13. In one embodiment, anumber of light-shielding portions 113 is two, and the light-shieldingportions 113 are in a shape of an elongated strip. One terminal of thelight-shielding portion 113 is connected to the main stem portion 111and the other terminal of the light-shielding portion 113 is set towardthe storage capacitance common electrode 13, i.e., the light-shieldingportion 113 is placed horizontally between the shielding commonelectrode 11 and the storage capacitance common electrode 13, and thetwo light-shielding portions 113 are disclosed a certain distance apart,which is disposed according to a size of the pixel.

Since the light-shielding portion 113 extends toward the storagecapacitance common electrode 13, the shielding common electrode 11 andthe storage capacitance common electrode 13 enclose a pixelaccommodating region. In one embodiment, the pixel accommodating regionis a rectangular region. The pixel accommodating region is configured toplace pixels, i.e., the shielding common electrode 11 and the storagecapacitance common electrode 13 are disposed around the pixels. In oneembodiment, the main stem portion 111, the light-shielding portion 113of the shielding common electrode 11, and the storage capacitance commonelectrode 13 are disposed around the pixels.

In order to separate the shielding common electrode 11 and the storagecapacitance common electrode 13 to separately input a first voltagesignal to the storage capacitance common electrode 13 to eliminate thehorizontal line crosstalk phenomenon of the liquid crystal displaypanel. There is a gap 15 between the light-shielding portion 113 of theshielding common electrode 11 and the storage capacitance commonelectrode 13. It should be noted that the gap 15 cannot be too small toavoid the light-shielding portion 113 sticking to the storagecapacitance common electrode 13 due to the manufacturing process. Thegap 15 also cannot be too large to avoid an occurrence of light leakagedue to the gap 15 being too large. In one embodiment, the gap 15 betweenthe light-shielding portion 113 of the shielding common electrode 11 andthe storage capacitance common electrode 13 is greater than or equal to5 micrometers and less than or equal to 15 micrometers. For example, thegap 15 between the light-shielding portion 113 of the shielding commonelectrode 11 and the storage capacitance common electrode 13 is 9micrometers, the gap 15 between the light-shielding portion 113 of theshielding common electrode 11 and the storage capacitance commonelectrode 13 is 10 micrometers, and the gap 15 between thelight-shielding portion 113 of the shielding common electrode 11 and thestorage capacitance common electrode 13 is 11 micrometers. It should benoted that a specific value of the gap 15 serves as an example and thereis no specific limitation on it, as long as the above-mentioned gap 15condition is satisfied.

It should be noted that the first voltage signal needs to eliminate theproblem of capacitance asymmetry due to a change between the positivepolarity and the negative polarity of the data line 21 of the drivingsubstrate. For this purpose, the first voltage signal is greater thanthe data voltage signal of the driving substrate, wherein the datavoltage signal is the signal transmitted on the data line 21. It shouldbe noted that the first voltage signal is greater than a maximum valueof the positive polarity of the data voltage signal to ensure that evenif the positive polarity and the negative polarity of the data voltagesignal changes, the first voltage signal is always greater than the datavoltage signal, and an electric field direction of the capacitor formedby the data line 21 on the second metal layer 200 and the commonelectrode on the first metal layer 100 of the driving substrate isdetermined by the first voltage signal. Since the first voltage signalremains unchanged, so that the electric field direction of the capacitorremains unchanged. In one embodiment, the voltage of the first voltagesignal is greater than or equal to 20V. For example, the voltage of thefirst voltage signal is 21 V, the voltage of the first voltage signal is23 V, and the voltage of the first voltage signal is 25 V. It should benoted that a specific value of the first voltage signal is for examplepurposes, and there is no specific limitation on it, as long as thefirst voltage signal condition described above is satisfied.

For the shielding common electrode 11, a voltage of the second voltagesignal transmitted by the shielding common electrode 11 must not be toohigh, wherein the voltage of the second voltage signal is too high tomake the light-shielding portion 113 of the shielding common electrode11 affect the liquid crystal ordering in the pixel and causes the lightleakage phenomenon occurs. For this reason, the voltage of secondvoltage signal is less than the voltage of a critical voltage signal. Itshould be noted that the critical voltage signal is a minimum value thatcauses light leakage to occur in the driving substrate, and the lightleakage phenomenon occurs when the second voltage signal is equal to orgreater than the critical voltage signal of the pixel. In oneembodiment, since the shielding common electrode 11 and the storagecapacitance common electrode 13 are isolated from each other and do notconnect, different voltage signals can be input to the shielding commonelectrode 11 and the storage capacitance common electrode 13,respectively. The voltage of the second voltage signal is less than thefirst voltage signal when different voltage signals are inputseparately. It is ensured that the shielding common electrode 11transmits relatively low voltage for avoiding light leakage. The storagecapacitance common electrode 13 transmits a high voltage with respect toeach other for eliminating horizontal crosstalk phenomena. In anotherembodiment, the critical voltage signal is 14 V. The voltage of thesecond voltage signal is greater than or equal to 6 V and less than 14V. For example, the voltage of the second voltage signal is 7 V, thevoltage of the second voltage signal is 8 V, the voltage of the secondvoltage signal is 9 V, the voltage of the second voltage signal is 10 V,the voltage of the second voltage signal is 11 V, the voltage of thesecond voltage signal is 12 V, and the voltage of the second voltagesignal is 13 V. It should be noted that the specific value of the secondvoltage signal is for example purpose and there is no specificlimitation on it, as long as the second voltage signal conditionsmentioned above are satisfied.

To facilitate the transmission of signals in the storage capacitancecommon electrode 13 of the present application, in one embodiment, adriving substrate is provided including a first signal source and aplurality of driving units 1. Each driving unit 1 includes a first metallayer 100. The first metal layer 100 includes a shielding commonelectrode 11 and a storage capacitance common electrode 13. Alight-shielding portion 113 of the shielding common electrode 11 extendstoward the storage capacitance common electrode 13. A pixelaccommodating region is enclosed by the shielding common electrode 11and the storage capacitance common electrode 13. There is a gap betweenthe light-shielding portion 113 of the shielding common electrode 11 andthe storage capacitance common electrode 13.

A first signal source is connected to the storage capacitance commonelectrode 13 and transmits a first voltage signal to the storagecapacitance common electrode 13. A voltage of the first voltage signalis greater than a voltage of the data voltage signal transmitted in thedata line 21 on the second metal layer 200 of the driving substrate. Itshould be noted that the first signal source is a voltage source. Thefirst signal source may be a device that is directly provided on thedriving substrate or may not be directly provided on a driving board,for example, also on a main control board of the LCD panel.

In order to facilitate transmission of signals of the shielding commonelectrode 11 and the storage capacitance common electrode 13 in thepresent application, in one embodiment, the driving substrate isprovided including a first signal source, a second signal source, and aplurality of driving units 1. Each driving unit 1 includes a first metallayer 100. The first metal layer 100 includes a shielding commonelectrode 11 and a storage capacitance common electrode 13. Alight-shielding portion 113 of the shielding common electrode 11 extendstoward the storage capacitance common electrode 13, A pixelaccommodating region is enclosed by the shielding common electrode 11and the storage capacitance common electrode 13. There is a gap 15between the light-shielding portion 113 of the shielding commonelectrode 11 and the storage capacitance common electrode 13.

The first signal source is connected to the storage capacitance commonelectrode 13 and transmits a first voltage signal to the storagecapacitance common electrode 13. A voltage of the first voltage signalis greater than a voltage of the data voltage signal of the drivingsubstrate. It should be noted that the first signal source is a voltagesource. The first signal source may be a device that is directlyprovided on the driving substrate or may not be directly provided on adriving board, for example, also on the main control board of the LCDpanel.

The second signal source is connected to the shielding common electrode11 and transmits a second voltage signal to the shielding commonelectrode 11. It should be noted that the second signal source is avoltage source. The second signal source may or may not be directlyprovided on the driving substrate, for example, also a device on themain control board of the liquid crystal display panel.

In addition, the driving unit 1 also includes a second metal layer 200disposed in a heterolayer setting from the first metal layer 100, asshown in FIG. 6 . The heterolayer setting means: after forming the firstmetal layer 100, a gate insulating layer 300 and a semiconductor layer400 are formed on top of the first metal layer 100 in sequence, and thenthe second metal layer 200 is disposed on top of the semiconductor layer400, as shown in FIG. 7 , which provides a structure diagram of theheterolayer setting of the first metal layer 100 and the second metallayer 200. Due to the heterolayer setting, a common electrode on thefirst metal layer 100 and the data line 21 of the second metal layer 200form a MIS capacitor. In this embodiment, the second metal layer 200includes the data line 21, the drain electrode layer 25, and the sourceelectrode layer 23. The first metal layer 100 also includes the gatescanning line 17, wherein the source electrode layer 23 is connected tothe data line 21, and the source electrode layer 23 is providedcorresponding to the gate scanning line 17. The source electrode layer23 provided corresponding to the gate scanning line 17 means: a positiveprojection of the source electrode layer 23 falls on the gate scanningline 17. The drain electrode layer 25 is connected to the sourceelectrode layer 23, and the drain electrode layer 25 is providedcorresponding to the storage capacitance common electrode 13. The drainelectrode layer 25 is provided corresponding to the storage capacitancecommon electrode 13 means: a positive projection of the drain electrodelayer 25 falls on the storage capacitance common electrode 13. It shouldbe noted that the drain electrode layer 25 includes a bump, and thesource electrode layer 23 includes a groove, wherein the bump isprovided in the space enclosed by the groove. The drain electrode layer25 and the source electrode layer 23 form a part of the TFT.

In each embodiment of the driving substrate of the present application:The driving unit 1 includes a first metal layer 100. The first metallayer 100 includes a light-shielding portion 113. The light-shieldingportion 113 of the shielding common electrode 11 extends toward thestorage capacitance common electrode 13, wherein a pixel accommodatingregion is enclosed by the shielding common electrode 11 and the storagecapacitance common electrode 13. There is a gap between thelight-shielding portion 113 of the shielding common electrode 11 and thestorage capacitance common electrode 13, there by the shielding commonelectrode 11 and the storage capacitance common electrode 13 are notconnected to each other. A first voltage signal is input to the storagecapacitance common electrode 13, and a voltage of the first voltagesignal is greater than a voltage of the data voltage signal of thedriving substrate. Since the voltage of the first voltage signal isgreater than the voltage of the data voltage signal, an electric fielddirection of the MIS capacitor in the driving substrate is not changedwhen the data voltage signal switches between the positive polarity andthe negative polarity, and the carriers in the MIS capacitor are notredistributed due to the data voltage signal switching between thepositive polarity and the negative polarity, thereby making the MIScapacitor symmetrical and eliminating a horizontal line crosstalkphenomenon of conventional display panels.

In one embodiment, a display panel is provided including a control mainboard, a display layer, and a driving substrate as described above. Thecontrol main board is connected to the driving substrate. The drivingsubstrate drives the deflection of the liquid crystal molecules in thedisplay layer.

It should be noted that the driving substrate in this embodiment is thesame as the driving substrate described in each embodiment of thedriving substrate of the present application, please refer to eachembodiment of the driving substrate of the present application fordetails, which will not be repeated here.

The technical features of the above-mentioned embodiments can becombined in any way, and for the sake of concise description, not allpossible combinations of each technical feature of the above-mentionedembodiments are described. However, as long as there is no contradictionin the combination of these technical features, they should beconsidered as a scope of the present specification.

The above-mentioned embodiments express only several implementations ofthe present application, and their descriptions are more specific anddetailed, but they should not be construed as a limitation of the scopeof the patent application. It should be noted that for a person ofordinary skill in the art, a number of variations and improvements canbe made without departing from the conception of the presentapplication, and these belong to the scope of protection of the presentapplication. Therefore, a scope of protection of the patent applicationshall be subject to the attached claims.

What is claimed is:
 1. A driving substrate, comprising a plurality ofdriving units, wherein each of the driving units comprises a first metallayer, and wherein the first metal layer comprises a shielding commonelectrode and a storage capacitance common electrode, wherein alight-shielding portion of the shielding common electrode extends towardthe storage capacitance common electrode, wherein a pixel accommodatingregion is enclosed by the shielding common electrode and the storagecapacitance common electrode, and wherein there is a gap between thelight-shielding portion of the shielding common electrode and thestorage capacitance common electrode.
 2. The driving substrate accordingto claim 1, wherein the storage capacitance common electrode transmits afirst voltage signal, and wherein a voltage of the first voltage signalis greater than a voltage of a data voltage signal of the drivingsubstrate.
 3. The driving substrate according to claim 2, wherein theshielding common electrode transmits a second voltage signal, wherein avoltage of the second voltage signal is less than a voltage of athreshold voltage signal, and wherein the voltage of the thresholdvoltage signal is a minimum value that causes a light leakage of thedriving substrate.
 4. The driving substrate of claim 3, wherein thevoltage of the second voltage signal is less than the voltage of thefirst voltage signal.
 5. The driving substrate of claim 3, wherein thevoltage of the first voltage signal is greater than or equal to 20V, andwherein the voltage of the second voltage signal is greater than orequal to 6V and less than 14V.
 6. The driving substrate according toclaim 2, wherein the driving substrate further comprises a first signalsource, wherein the first signal source is connected to the storagecapacitance common electrode, and transmits the first voltage signal tothe storage capacitance common electrode.
 7. The driving substrateaccording to claim 6, wherein the driving substrate further comprises asecond signal source, wherein the second signal source is connected tothe shielding common electrode and transmits a second voltage signal tothe shielding common electrode, and wherein a voltage of the secondvoltage signal is less than the voltage of the first voltage signal. 8.The driving substrate according to claim 1, wherein the gap between thelight-shielding portion of the shielding common electrode and thestorage capacitance common electrode is greater than or equal to 5micrometers and less than or equal to 15 micrometers.
 9. The drivingsubstrate according to claim 1, wherein the driving unit furthercomprises a second metal layer disposed in a different layer from thefirst metal layer; wherein the second metal layer comprises a data line,a drain electrode layer, and a source electrode layer, and wherein thefirst metal layer further comprises a gate scanning line; and whereinthe source electrode layer is connected to the data line, and the sourceelectrode layer is disposed corresponding to the gate scanning line,wherein the drain electrode layer is connected to the source electrodelayer, and the drain electrode layer is disposed corresponding to thestorage capacitance common electrode.
 10. A display panel, comprising acontrol main board, a liquid crystal layer, and a driving substrate,wherein the driving substrate comprises a plurality of driving units,wherein each of the driving units comprises a first metal layer, andwherein the first metal layer comprises a shielding common electrode anda storage capacitance common electrode; wherein a light-shieldingportion of the shielding common electrode extends toward the storagecapacitance common electrode, wherein a pixel accommodating region isenclosed by the shielding common electrode and the storage capacitancecommon electrode, and wherein there is a gap between the light-shieldingportion of the shielding common electrode and the storage capacitancecommon electrode; and wherein the control main board is connected to thedriving substrate, and wherein the driving substrate is configured todrive the liquid crystal molecules in the liquid crystal layer todeflect.
 11. The display panel according to claim 10, wherein thestorage capacitance common electrode transmits a first voltage signal,and wherein a voltage of the first voltage signal is greater than avoltage of a data voltage signal of the driving substrate.
 12. Thedisplay panel according to claim 11, wherein the shielding commonelectrode transmits a second voltage signal, wherein a voltage of thesecond voltage signal is less than a voltage of a threshold voltagesignal, and wherein the voltage of the threshold voltage signal is aminimum value that causes a light leakage of the driving substrate. 13.The display panel according to claim 12, wherein the voltage of thesecond voltage signal is less than the voltage of the first voltagesignal.
 14. The display panel according to claim 12, wherein the voltageof the first voltage signal is greater than or equal to 20V, and whereinthe voltage of the second voltage signal is greater than or equal to 6Vand less than 14V.
 15. The display panel according to claim 11, whereinthe driving substrate further comprises a first signal source, whereinthe first signal source is connected to the storage capacitance commonelectrode and transmits the first voltage signal to the storagecapacitance common electrode.
 16. The display panel according to claim15, wherein the driving substrate further comprises a second signalsource, wherein the second signal source is connected to the shieldingcommon electrode and transmits a second voltage signal to the shieldingcommon electrode, and wherein a voltage of the second voltage signal isless than the voltage of the first voltage signal.
 17. The display panelaccording to claim 10, wherein the gap between the light-shieldingportion of the shielding common electrode and the storage capacitancecommon electrode is greater than or equal to 5 micrometers and less thanor equal to 15 micrometers.
 18. The display panel according to claim 10,wherein the driving unit further comprises a second metal layer disposedin a different layer from the first metal layer; wherein the secondmetal layer comprises a data line, a drain electrode layer, and a sourceelectrode layer, and wherein the first metal layer further comprises agate scanning line; and wherein the source electrode layer is connectedto the data line, and the source electrode layer is disposedcorresponding to the gate scanning line, wherein the drain electrodelayer is connected to the source electrode layer, and the drainelectrode layer is disposed corresponding to the storage capacitancecommon electrode.
 19. A driving substrate, comprising a plurality ofdriving units, wherein each of the driving units comprises a first metallayer, and wherein the first metal layer comprises a shielding commonelectrode and a storage capacitance common electrode; wherein alight-shielding portion of the shielding common electrode extends towardthe storage capacitance common electrode, wherein a pixel accommodatingregion is enclosed by the shielding common electrode and the storagecapacitance common electrode, and wherein there is a gap between thelight-shielding portion of the shielding common electrode and thestorage capacitance common electrode; wherein the storage capacitancecommon electrode transmits a first voltage signal, and wherein a voltageof the first voltage signal is greater than a voltage of a data voltagesignal of the driving substrate; and wherein the gap between thelight-shielding portion of the shielding common electrode and thestorage capacitance common electrode is greater than or equal to 5micrometers and less than or equal to 15 micrometers.
 20. The drivingsubstrate according to claim 19, wherein the shielding common electrodetransmits a second voltage signal, wherein a voltage of the secondvoltage signal is less than a voltage of a threshold voltage signal, andwherein the voltage of the threshold voltage signal is a minimum valuethat causes a light leakage of the driving substrate.